/* ==========================================================================
   OPTIMIZED HIGH-PERFORMANCE LOADING SYSTEM & SKELETON UI - FINTRGO
   ========================================================================== */

:root {
    --loader-primary: #0d9488;
    --loader-primary-light: #14b8a6;
    --loader-secondary: #0FA58A;
    --loader-bg-overlay: rgba(15, 23, 42, 0.75);
}

/* --------------------------------------------------------------------------
   1. SMART FULL-PAGE LOADER OVERLAY (GPU-Accelerated 60 FPS)
   -------------------------------------------------------------------------- */
#global-page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    background: var(--loader-bg-overlay);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    will-change: opacity, transform;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

#global-page-loader.loader-active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

/* 3D Double Orbital Spinner Container */
.loader-spinner-3d-container {
    position: relative;
    width: 70px;
    height: 70px;
    will-change: transform;
}

/* Outer Ring */
.loader-ring-outer {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--loader-primary);
    border-right-color: var(--loader-primary-light);
    animation: spinOuter 0.9s linear infinite;
    will-change: transform;
}

/* Inner Ring */
.loader-ring-inner {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-bottom-color: var(--loader-secondary);
    border-left-color: #38bdf8;
    animation: spinInner 0.7s linear infinite reverse;
    will-change: transform;
}

/* Core Orb */
.loader-core-orb {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin-top: -8px;
    margin-left: -8px;
    background: var(--loader-primary-light);
    border-radius: 50%;
    animation: corePulse 0.8s ease-in-out infinite alternate;
    will-change: transform, opacity;
}

/* Brand Text Indicator */
.loader-brand-text {
    margin-top: 18px;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

.loader-dots-pulse span {
    animation: dotsPulse 1s infinite ease-in-out both;
    display: inline-block;
    will-change: opacity, transform;
}

.loader-dots-pulse span:nth-child(1) { animation-delay: 0s; }
.loader-dots-pulse span:nth-child(2) { animation-delay: 0.15s; }
.loader-dots-pulse span:nth-child(3) { animation-delay: 0.3s; }

/* Pure GPU-Accelerated Keyframe Animations */
@keyframes spinOuter {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes spinInner {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes corePulse {
    0% { transform: scale(0.8); opacity: 0.5; }
    100% { transform: scale(1.15); opacity: 1; }
}

@keyframes dotsPulse {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1.1); }
}


/* --------------------------------------------------------------------------
   2. INSTANT BUTTON LOADING STATES
   -------------------------------------------------------------------------- */
.btn-loading {
    position: relative !important;
    pointer-events: none !important;
    opacity: 0.85 !important;
    cursor: not-allowed !important;
    user-select: none !important;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.btn-spinner-icon {
    display: inline-block;
    width: 0.9em;
    height: 0.9em;
    margin-right: 6px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: btnSpin 0.6s linear infinite;
    vertical-align: -0.12em;
    will-change: transform;
}

@keyframes btnSpin {
    to { transform: rotate(360deg); }
}


/* --------------------------------------------------------------------------
   3. SKELETON SHIMMER PLACEHOLDERS
   -------------------------------------------------------------------------- */
.skeleton-shimmer {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.2s infinite linear;
    border-radius: 6px;
    will-change: background-position;
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Skeleton Structural Layouts */
.skeleton-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skeleton-title {
    height: 18px;
    width: 45%;
    border-radius: 4px;
}

.skeleton-text {
    height: 12px;
    width: 85%;
    border-radius: 4px;
}

.skeleton-text-short {
    height: 12px;
    width: 55%;
    border-radius: 4px;
}

.skeleton-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
}

.skeleton-table-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid #f1f5f9;
}

.skeleton-table-cell {
    height: 14px;
    flex: 1;
    border-radius: 4px;
}

/* Local Section Spinner for AJAX */
.local-section-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px;
    width: 100%;
}